Cop tube



- lMay 1o, 1921. 1,628,451

. J. FRANZ GOP TUBE Filed Dec. 15. 192e Patented May 10, 1927..

P'EFNF FFQ.

JOSEF FRANZ, OF BISCHOFSVIERDA, GERMANY.

COF TUBE.

Application led December 15, 1926, Serial No. 154,952, and in GermanyJune 9, 1925.

In order to prevent the yarn in the shuttlc of a weaving loom tromgetting loose on the cop tube under the intiuence ot the shocks to whichthe shuttle is subjected,

l cop tubes are sometimes provided with annular or spiral ribs. Asordinarily made, `these ribs are liable to tear fine yarn and give riseto waste of material. The object ot the present invention is to providesuch tubes with ribs which are able to prevent a loosening oi the yarnwithout tearing the same, and the invention consists in forming the ribsby the introduction of a thread or threads between the paper layers whenthe tube is made. The layers are pasted together, and as the thread iscovered by the paper, a very smooth rib will be produced whereby theyarn cannot be torn.

Fig. l of the accompanying drawings represents a view of the cop tubeaccording to one construction,

Fig. 2, a view showing the method of making the same,

Fig. 3, a View of another 'form of the tube, and

Fig. 4;, a view showing the method of making the latter tube.

The cop tube o is made in known manner by the winding of the gummed orpasted paper strip a on to a conical core. The tube is provided withribs CZ or (Z1 which according to the invention are formed by theintroduction of ai thread or threads between the paper layers. Annularribs l are formed, -as shown in Fig. 2, by feeding 35 a plurality ofthreads in between the paper layers. In the case of a spiral rib (Z1, athread e is used which is guided along the tube as the lat-ter is made,as indicated in Fig. 4. Y

As the thread or threads are embedded in the paste and covered by thepaper, a smooth rib will be produced, and the production of' the ribsdoes not materially complicate the making of the tube.

I claim:

1. A cop tube composed of paper layers which are pasted together, andthreads embedded between said paper layers so as to form circumferentialribs.

2. A method of making ribbed cop tubes out of paper and thread,consisting in winding a paper strip together with the thread about lacore so that the thread becomes embedded between the paper layers andpro- 55 duces the ribs, the layers being pasted together over thethread.

JOSEF FRANZ.

